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A Realization of Effective SUSY Zhen-hua Zhao ITP,CAS Liu & Zhao arXiv:1312.7389 1.

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Presentation on theme: "A Realization of Effective SUSY Zhen-hua Zhao ITP,CAS Liu & Zhao arXiv:1312.7389 1."— Presentation transcript:

1 A Realization of Effective SUSY Zhen-hua Zhao ITP,CAS Liu & Zhao arXiv:

2 Contents Motivation The Model Phenomenological Consequence Summary 2

3 Higgs with 125 GeV mass 3 SM is completed and self-consistent

4 Gauge Hierarchy Problem When extrapolated to higher scale Λ, Higgs mass suffers quadratic divergence problem TeV SUSY is good candidate for solving this problem 4

5 Search for SUSY Nothing found 5

6 Motivation LHC constraints on SUSY particles 1 st & 2 nd generation squarks heavy as 10 TeV Original motivation for SUSY: Naturalness 3 rd generation & Higgsino, gaugino light as 1 TeV A model realizing this mass spectrum needed 6

7 Effective SUSY For solving FCNC problem induced by soft terms “irrelevancy” hypothesis: 1 st &2 nd generation squarks very heavy e.g. 10 TeV “Naturalness” criterion: 3 rd generation squarks should stay at 1 TeV 7 A. G. Cohen et al hep-ph/

8 Framework 8 Liu hep-ph/ N. Craig et al arXiv:

9 Gauge-Mediated-SUSY-Breaking Hidden Sector G1 Sector G2 Sector 9

10 Gauge Symmetry Breaking G1G2 SM Gauge Symmetry 10

11 Gauge Coupling Constants 11 or

12 Yukawa Coupling Only Yukawa coupling for 3 rd generation allowed Irrelevant operators allowed by G1  G2 exist After Gauge Symmetry Breaking 12

13 Produce Yukawa Coupling An extra vector-like generation under G2 13 N. Craig et al arXiv:

14 Higgs mass and A-term A. Arbey et al arXiv:

15 Higgs-Messenger coupling Z. F. Kang et al arXiv:

16 Fields in G2 sector 16

17 Strong Unification The ratio of gauge couplings flow to an infrared fixed point D. Ghilencea et al hep-ph/ Landau PoleEW scaleIntermediate scale M   

18 Gauge coupling running Landau PoleEW scaleIntermediate scale M 18      

19 Summary Effective SUSY can reconcile naturalness requirement with experimental results A realistic model is introduced and its phenomenological consequence discussed Not only hierarchy among sparticles but also fermions among three generations can be produced Strong coupling can be predicted without Grand Unification 19


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